Impurity removal device for heparin sodium preparation

The utility model provides an impurity removal device for heparin sodium preparation, which belongs to the technical field of heparin sodium preparation and comprises a box body, the interior of the box body is divided into a filtering area, a stirring area and a discharging area from top to bottom, a first filtering net and a filtering plate are connected to the interior of the box body, and a feeding pipe which is obliquely arranged is connected to the upper portion of one side of the box body. One end of the feeding pipe is connected with a feeding hopper, the first filtering net is located between the filtering area and the stirring area, and the filtering plate is located between the stirring area and the discharging area; granular impurities in the heparin sodium can be removed after the heparin sodium passes through the filtering area, the heparin sodium is filtered for the first time, the heparin sodium is located in the stirring area, impurity proteins and microorganisms in the heparin sodium are tre